def test_add_auth_key(self):
# Test adding a key ('4') to an existing list ('1', '2', '3')
self.cons_w.ssh_authorized_keys = tuple(['1', '2', '3'])
mc_task.add_authorized_key(mock.Mock(), '4')
self.assertEqual(['1', '2', '3', '4'],
self.cons_w.ssh_authorized_keys)
self.cons_w.update.assert_called_once_with()
# Test we don't call update when not needed.
self.cons_w.reset_mock()
mc_task.add_authorized_key(mock.Mock(), '2')
self.assertEqual(0, self.cons_w.update.called)
# Test the transaction retry
self.cons_w.reset_mock()
resp = mock.Mock(status=const.HTTPStatus.ETAG_MISMATCH)
self.cons_w.update.side_effect = exc.HttpError(resp)
# When the transaction decorator refreshes the mgmt console wrapper
# then we know it's retrying so just raise an exception and bail
self.cons_w.refresh.side_effect = ValueError()
self.assertRaises(ValueError, mc_task.add_authorized_key,
mock.Mock(), '5')
# Ensure it really was refresh that caused the exception
self.assertEqual(1, self.cons_w.refresh.call_count)
# And that our update was called
self.assertEqual(1, self.cons_w.update.call_count)
def pre_live_migration(self, context, block_device_info, network_info,
disk_info, migrate_data, vol_drvs):
"""Prepare an instance for live migration
:param context: security context
:param block_device_info: instance block device information
:param network_info: instance network information
:param disk_info: instance disk information
:param migrate_data: implementation specific data dict
:param vol_drvs: volume drivers for the attached volumes
"""
LOG.debug('Running pre live migration on destination.',
instance=self.instance)
LOG.debug('Migration data: %s' % migrate_data)
# Set the ssh auth key if needed.
src_mig_data = migrate_data.get('migrate_data', {})
pub_key = src_mig_data.get('public_key')
if pub_key is not None:
mgmt_task.add_authorized_key(self.drvr.adapter, pub_key)
# For each volume, make sure it's ready to migrate
dest_mig_data = {}
for vol_drv in vol_drvs:
LOG.info(_LI('Performing pre migration for volume %(volume)s'),
dict(volume=vol_drv.volume_id))
try:
vol_drv.pre_live_migration_on_destination(src_mig_data,
dest_mig_data)
except Exception as e:
LOG.exception(e)
# It failed.
vol_exc = LiveMigrationVolume(
host=self.drvr.host_wrapper.system_name,
name=self.instance.name, volume=vol_drv.volume_id)
raise exception.MigrationPreCheckError(reason=vol_exc.message)
# Scrub stale/orphan mappings and storage to minimize probability of
# collisions on the destination.
stor_task.ComprehensiveScrub(self.drvr.adapter).execute()
# Save the migration data, we'll use it if the LPM fails
self.pre_live_data = dest_mig_data
return dest_mig_data
def pre_live_migration(self, context, block_device_info, network_info,
disk_info, migrate_data, vol_drvs):
"""Prepare an instance for live migration
:param context: security context
:param block_device_info: instance block device information
:param network_info: instance network information
:param disk_info: instance disk information
:param migrate_data: implementation specific data dict
:param vol_drvs: volume drivers for the attached volumes
"""
LOG.debug('Running pre live migration on destination.',
instance=self.instance)
LOG.debug('Migration data: %s' % migrate_data)
# Set the ssh auth key if needed.
src_mig_data = migrate_data.get('migrate_data', {})
pub_key = src_mig_data.get('public_key')
if pub_key is not None:
mgmt_task.add_authorized_key(self.drvr.adapter, pub_key)
# For each volume, make sure it's ready to migrate
dest_mig_data = {}
for vol_drv in vol_drvs:
LOG.info(_LI('Performing pre migration for volume %(volume)s'),
dict(volume=vol_drv.volume_id))
try:
vol_drv.pre_live_migration_on_destination(
src_mig_data, dest_mig_data)
except Exception as e:
LOG.exception(e)
# It failed.
vol_exc = LiveMigrationVolume(
host=self.drvr.host_wrapper.system_name,
name=self.instance.name,
volume=vol_drv.volume_id)
raise exception.MigrationPreCheckError(reason=vol_exc.message)
# Scrub stale/orphan mappings and storage to minimize probability of
# collisions on the destination.
stor_task.ComprehensiveScrub(self.drvr.adapter).execute()
# Save the migration data, we'll use it if the LPM fails
self.pre_live_data = dest_mig_data
return dest_mig_data